shindaiwa bp35 user manual
DESCRIPTION
SHINDAIWA BP35 BACKPACK BRUSHCUTTER USER MANUALTRANSCRIPT
BP35
WARNING!Minimize the risk of injury to yourself and others! Read this manual and familiarize yourself with the contents. Always wear eye and hearing protection when operating this unit.
SHINDAIWA OWNER’S/OPERATOR’S MANUAL
BP35 BRUSHCUTTER
Part Number 72051-93115 Rev. 5/05
2
Throughout this manual are “Special Attention” statements.
WARNING!
A statement preceded by the trian-gular attention symbol and the word “WARNING” contains information that should be acted upon to prevent serious bodily injury.
CAUTION!A statement preceded by the word “CAUTION” contains information that should be acted upon to prevent mechanical damage.
IMPORTANT!A statement preceded by the word “IMPORTANT” is one that possesses special significance.
NOTE:A statement preceded by the word “NOTE” contains information that is handy to know and may make your job easier.
Attention Statements
IMPORTANT!The operational procedures described in this manual are intended to help you get the most from this unit as well as to protect you and others from harm. These procedures are guidelines for safe operation under most conditions, and are not intended to replace any safety rules and/or laws that may be in force in your area. If you have questions regard-ing your Shindaiwa power tool, or if you do not understand something in this manual, your Shindaiwa dealer will be glad to assist you. You may also contact Shindaiwa, Inc. at the address printed on the back of this manual.
Introduction
Attention Statements ...............................2
General Safety Instructions ....................3
Checking Unit Condition ........................3
Unit Description .......................................5
Specifications ............................................5
Assembly ...................................................6
Mixing Fuel ..............................................9
Starting the Engine ................................10
Starting a Flooded Engine ....................10
Stopping the Engine ..............................11
Engine Idle Adjustment .........................11
Using a Brushcutter Blade ...................12
Cutting Grass (trimmer head) .............13
Maintenance ...........................................14
Spark Arrester ........................................15
Long Term Storage ................................16
Blade Sharpening ...................................16
Troubleshooting Guide .........................17
PAGE
The Shindaiwa 35-series of hand power tools has been designed and built to de-liver superior performance and reliability without compromise to quality, comfort, or durability.Shindaiwa high performance engines represent the leading edge of 2-cycle engine technology, delivering excep-tionally high power from remarkably low displacement and weight. As an owner/operator, you’ll soon discover for yourself why Shindaiwa is simply in a class by itself!
IMPORTANT!The information contained in this manual describes units available at the time of publication.
Shindaiwa Inc. reserves the right to make changes to products without prior notification, and without obligation to make alterations to units previously manufactured.
Contents
Beware of blade thrust. A jammed blade can cause the brushcutter to jerk suddenly and may cause the operator to lose control of the unit.
Read and follow thisoperators manual.Failure to do so couldresult in serious injury.
Wear eye and hearingprotection at all timesduring the operation of this unit.
Keep bystandersat least 50 feet (15 m)away during operation.
Beware of thrown or ricocheted objects.
3
SA
FET
Y
Work SafelyBrushcutters operate at very high speeds and can do serious damage or injury if they are misused or abused. Never allow a person without training or instruction operate this unit!
WARNING!
Use Good JudgmentNEVER operate the engine when transporting the unit.
NEVER operate the engine indoors! Make sure there is always good ven-tilation. Fumes from engine exhaust can cause serious injury or death.
ALWAYS use the proper cutting tool for the job.
ALWAYS stop the unit immediately if it suddenly begins to vibrate or shake. Inspect for broken, missing or improperly installed parts or attach-ments.
NEVER extend trimming line beyond the length specified for your unit.
ALWAYS keep the unit as clean as practical. Keep it free of loose vegeta-tion, mud, etc.
ALWAYS hold the unit firmly with both hands when cutting or trimming, and maintain control at all times.
ALWAYS keep the handles clean.
ALWAYS disconnect the spark plug wire before performing any maintenance work.
ALWAYS, if a blade should bind fast in a cut, shut off the engine immedi-ately. Push the branch or tree to ease the bind and free the blade.
Stay AlertYou must be physically and mentally fit to operate this unit safely.
General Safety Instructions
WARNING!
Never make unauthorized attach-ment installations.
WARNING!
Never operate power equipment of any kind if you are tired or if you are under the influence of alcohol, drugs, medication or any other sub-stance that could affect your ability or judgement.
WARNING!
Minimize the Risk of FireNEVER smoke or light fires near the unit.
ALWAYS stop the engine and allow it to cool before refueling. Avoid overfilling and wipe off any fuel that may have spilled.
ALWAYS inspect the unit for fuel leaks before each use. During each refill, check that no fuel leaks from around the fuel cap and/or fuel tank. If fuel leaks are evident, stop using the unit immediately. Fuel leaks must be repaired before using the unit.
ALWAYS move the unit to a place well away from a fuel storage area or other readily flammable materials before starting the engine.
NEVER place flammable material close to the engine muffler.
Checking Unit ConditionNEVER operate the unit with the cutting attachment shield or other protective devices (harness, ignition switch, blade retention clip, etc.) removed!
ALWAYS make sure the cutting attach-ment is properly installed and firmly tightened before operation.
NEVER use a cracked or warped cutting attachment. If a properly installed attach-ment vibrates, replace the attachment with new one and re-check.
ALWAYS stop the engine immediately and check for damage if you strike a foreign object or if the unit becomes tangled. Do not operate with broken or damaged equipment.
NEVER allow the engine to operate at high RPM without a load. Doing so could damage the engine.
NEVER operate a unit with worn or dam-aged fasteners or attachment holders.
NEVER cut with a dull blade. Doing so will increase the risk of blade thrust and may also cause equipment damage.
WARNING!
A cutting attachment shield or other protective device is no guarantee of protection against ricochet. YOU MUST ALWAYS GUARD AGAINST FLYING DEBRIS!
Use only authorized Shindaiwa parts and accessories with your Shindaiwa brushcutter. Do not make modifications to this unit without the written approval of Shindaiwa, Inc.
4
BP3502A
BP3501A
The Properly Equipped Operator
Always operate with both hands firmly gripping the
unit.
Wear close-fitting clothing to protect legs and arms. Gloves offer added protection and are strongly recommended. Do not wear clothing or jewelry that could get caught in machinery or under-brush. Secure long hair so that it is above shoulder level.NEVER wear shorts!
Wear hearing protection devices and a broad-brimmed hat or helmet.
Always wear eye protection such as goggles or safety glasses to shield
against thrown objects.
Keep away from the rotating trimmer line or blade at all times,
and never lift a moving attachment above waist-high.
Wear appropriate footwear (non-skid boots or shoes): do not wear open-toed shoes or sandals. Never work barefooted!
Keep a proper footing and do not overreach. Maintain your balance at all times during operation.
Always make sure the appropriate cutting attachment shield is correctly installed and
in good condition.
Figure 1
SA
FET
Y
Be Aware of the Working Environment
Avoid long-term operation in very hot or very cold
weather.
Make sure bystanders or observers outside the 50-foot “danger zone”
wear eye protection.
Be extremely careful of
slippery terrain, especially during rainy weather.
If contact is made with a hard object, stop the engine and inspect the cutting attachment for damage.
Be constantly alert for objects and debris that could be thrown either from the rotating cutting attachment or bounced from a hard surface.
Reduce the risk of bystanders being
struck by flying de-bris. Make sure no
one is within 50 feet (15 meters)—that’s about 16 paces—of
an operating attach-ment.
Beware of a coasting blade when brushcutting. A coasting blade can
injure while it continues to spin after the throttle trigger is released or after
the engine is stopped.
50 FEET
ALWAYS clear your work area of trash or hidden debris that could be thrown back at you or toward a bystander. When operating
in rocky terrain or near electric wires or fences, use extreme caution to avoid
contacting such items with the cutting attachment.
Figure 2
5
BP3503A
Throttle Trigger
GearcaseBrushcutter
Blade
Outer Tube
Handle
Fuel Tank
Cylinder Cover
C35 BRUSHCUTTER
Cutting Attachment
Shield
Ignition Switch
Spark Plug
Throttle Assembly
Flex Cable
Air Cleaner
Muffler
Unit Description
WARNING!
Do not make unauthorized modifica-tions or alterations to this unit or its components.
Using the accompanying illustrations as a guide, familiarize yourself with this unit and its various components. Un-derstanding this unit helps ensure top performance, long service life, and safer operation. D
ES
CR
IPT
ION
Figure 3
Engine Model ....................................................... SK35F Engine
Dry Weight (less cutting attachment and guard) .................21.3 lbs./9.7 kg
Type ....................................2-cycle, vertical cylinder, air cooled
Bore x Stroke ........................................................36mm x 33mm
Displacement ...................................................33.6.cc/2.1 cu. in.
Maximum Power Output ................ 1.8 hp @ 7500 RPM (min-1)
Operating RPM Range ......................... 4,500-7,000 RPM (min-1)
Transmission Type ...................... Automatic centrifugal-clutch through bevel gears
Fuel/Oil Ratio .............................................. 50:1 with Shindaiwa Premium 2-cycle mixing oil
Fuel Tank Capacity ..........................................40.6 oz./ 1200 ml
Carburetion ............................................................. TK, float type
Ignition ........................... Fully electronic, transistor controlled
Spark Plug ............................................................. Champion CJ8
Air Cleaner .............................................................Foam element
Starting Method .....................................................Recoil starter
Stopping Method ................................................... Toggle switch
Specifications
Prior to AssemblyBefore assembling this product, please make sure you have all the components required for a complete unit:
Engine Assembly (Powerhead).
Outer Tube Assembly.
Cutting Attachment Shield.
Handle.
IMPORTANT!The terms “left,” “left-hand,” and “LH”: “right,” “right-hand,” and “RH”; “front” and “rear” refer to directions as viewed by the operator during normal operation of this product.
Specifications subject to change without notice
IMPORTANT!BP35 brushcutter units do not have the spark arrester installed in the muf-fler. Before placing the brushcutter in service, check local, state and federal regulations to determine if a spark arrester is required in your area. See page 15 for details.
Tool bag including: Hex wrenches and a combination spark plug wrench and cutting attachment shield mount-ing hardware.
Carefully inspect all components for damage.
6
BP3511
BP3509
BP3504
BP3510BP3508
BP3507
BP3506
BP3505
Assembly: Driveshaft/Powerhead
1. Place the powerhead on a flat surface.
2. Route the “engine side” of the flex cable through the cable holder.
3. Remove the two protective covers from the flex cable and insert the flex cable housing marked “engine end” into the powerhead with the locking hole facing up. See Figure 4.
4. Lift up on the flex cable release knob and slide flex cable housing all the way in until it bottoms in the case and the release knob locks into the lock-ing hole in the flex cable housing. See Figure 5.
BP35 Brushcutter
AS
SE
MB
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Figure 4
5. From the opposite end, rotate and push the drive cable to engage it into the clutch drum. See Figure 5.
NOTE:No more than 7/8” (22 mm) of the flex cable should protrude from the flex cable housing when properly installed.
Figure 5
6. Remove the Phillips head screw from the rear hand grip and slide the O-ring end of the flex cable housing into the rear of the outer tube handle until the groove on the housing lines up with the hole for the Phillips head screw. See Figure 6.
IMPORTANT!It may be necessary to rotate the output shaft of the gearcase to fully engage the drive cable into the lower tube assembly.
7. Install and tighten the Phillips head screw firmly.
Figure 6
Release Knob Locking Hole “Engine Side”
Label
Throttle Cable
Cable Holder
7/8"
Powerhead
Groove
O-RingRear Handle
Flex Cable Housing
Throttle and Handle Assembly Install the Handle
Cable Guide
Outer Tube
Throttle Cable
Handle Position Label
Figure 11
Throttle Lever
Figure 8
Figure 7
Cable End
Lower Clamp
Figure 9
1. Use a Phillips head screwdriver to remove the lower clamp retaining screws from the handle. Separate the clamp from the handle.
2. Position the handle on the outer tube behind the handle positioning label. Reassemble the lower clamp to the handle in the reverse order of disas-sembly. See Figure 11.
3. Firmly tighten the (4) handle retain-ing screws. See Figure 11.
Install the Throttle Cable
1. Loosen the two screws securing the throttle assembly and slide it forward on the outer tube. See Figure 7.
2. Remove the cable guide to allow the throttle trigger to swing out. See Figure 7.
3. Slide the throttle cable through the hand grip and insert the cable end into the recess in the throttle trigger. See Figure 8.
4. Install the cable guide and slide the throttle assembly back into place. Tighten the screws securely. See Figure 9.
5. Connect the powerhead and stop switch wire terminals.
Figure 10
Loosen screws
Cable Guide
Clamp Retaining Screw
7
BP3514
BP3515
AS
SE
MB
LYAdjust Throttle Cable Free Play
1. Test the throttle lever for smooth op-eration. If any stiffness or binding are noted, the cause must be identified and corrected before the brushcutter can be placed in service.
2. Test the throttle lever for proper “free play” of approximately 7mm in the idle position. See Figure 12. If neces-sary, adjustments can be made at the carburetor.
1. Temporarily move the adjuster cover to expose the cable adjuster.
2. Loosen the cable locknut and then turn the cable adjuster in or out until proper free play is achieved. See Figure 13.
3. Tighten cable adjuster locknut and move adjuster cover back into place.
7mm Free Play
BP35 Brushcutter
Checking Free Play Adjusting Free Play
Adjuster Cover
Cable Locknut
Cable Adjuster
Figure 12 Figure 13
Install the Cutting Attachment Shield
Install the Cutting Attachment Shield.1. Insert the cutting attachment shield
between the outer tube and the cutting attachment shield mounting plate. See Figure 14.
WARNING!
NEVER operate the unit without the cutting attachment shield installed and tightly secured!
CAUTION!Make sure the clamp screw and retaining nut are securely tightened before tightening the four socket-head cap screws.
NOTE:It may be necessary to loosen the retain-ing nut and clamp screw to adjust cutting attachment shield mounting plate.
2. Fit the two shims and the bracket over the outer tube and loosely install the four socket-head cap screws. See Figure 14.
Sub-Shield. (when trimmer head is in use)1. Attach the shield extension to the
cutting attachment shield.
WARNING!
NEVER use this machine without sub-shield when using a trimmer head.
CAUTION!Make sure the sub-guard is com-pletely hooked at the hook receiver.
Sub-shieldHook
HookReceiver
Cutting Attachment Shield
3. Tighten the four socket-head cap screws to secure the cutting attach-ment shield.
Figure 14
Line Cutter
Figure 14A
HexScrews
Socket-headCap Screws
Shim
Shim
Nut
Bracket
Cutting Attachment Shield
Outer Tube
WARNING!
The line cutter is very sharp. Wear gloves to protect your hands when handling.
To Change Position of Line Cutter.
1. Remove the 2 hex screws with a 4mm hex wrench. See Figure 14A.
2. Rotate line cutter. See Figure 14A.
3. Reinstall the two hex screws and tighten them securely.
NOTE:Be careful to not lose the 2 nuts in the cutting attachment shield, they are not captured.
The line cutter can be positioned in 2 positions to obtain different line length for cutting.
Cutting Attachment Shield Mounting
Plate
8
35015
35012 35013
35011
35010
AssemblyInstall the Blade (BP35)
NOTE:The BP35 is shipped with Holder A, the safety clip, Holder B, shaft bolt, and bolt guard installed. The shaft bolt is a LEFT-HAND THREAD AND IS REMOVED IN A CLOCKWISE ROTATION!
1. With the gearcase output shaft fac-ing up, rotate the output shaft and Holder A until the hole in Holder A aligns with the matching hole in the gearcase flange, and then lock the holder to the gearcase by insert-ing the long end of the hex wrench through both holes. See Figure 15.
2. Remove the shaft bolt, bolt guard and Holder B. See Figure 15.
3. Slide the safety clip off center on the gearcase shaft. See Figure 15A.
NOTE:When installing certain blades, it may be necessary to temporarily remove the safety clip.
4. Slide the blade over the safety clip and onto the flange on Holder A. See Figure 15B.
5. Lock the blade on the shaft by centering the safety clip. See Figure 15C.
A
B C
Shaft Bolt
Bolt Guard
Holder B
Holder A
Output Shaft
Slide the safety clip off-center
Center the safety clipSlip the blade into place
Safety Clip
Figure 15
Hex Wrench
AS
SE
MB
LY
WARNING!
Never operate the brushcutter without the safety clip installed and both holders tightly secured and flat against the blade surface!
CAUTION!Install the blade so the printed surface is visible to the operator while the brushcutter is in the normal operating position.
35014
6. Install Holder B on the gearcase shaft. See Figure 16.
Install Holder B
Cutting Blade
Tighten the assembly
Combination Spark Plug/Screwdriver
Wrench
Hex Wrench
Bolt Guard
Holder B
Figure 17
Figure 16
The BP35 should now be completely assembled.
IMPORTANT!The machined recess in Holder B must completely surround the safety clip, and both holders must be flat against the surface of the blade.
7. Lock Holder A to the gearcase by inserting the long end of the hex wrench through both holes as done in step 1 and tighten the shaft bolt securely with the combination spark plug wrench. See Figure 17.
8. Remove the hex wrench.
9
35008
CAUTION! Some gasolines contain alcohol
as an oxygenate! Oxygenated fuels may cause increased oper-ating temperatures. Under certain conditions, alcohol-based fuels may also reduce the lubricating qualities of some mixing oils. Nev-er use any fuel containing more than 10% alcohol by volume!
Generic oils and some outboard motor oils may not be intended for use in high-performance air cooled 2-cycle engines, and should never be used in your Shindaiwa engine!
CAUTION!This engine is designed to oper-ate on a 50:1 mixture consisting of unleaded gasoline and a premium 2-cycle mixing oil only. Use of non-approved mixing oils can lead to excessive maintenance costs and/or engine damage.
AS
SE
MB
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35007
AssemblyInstalling a Trimmer Head A
Safety Clip (not used)
Shaft Bolt (not used)Bolt Guard
(not used)
NOTE: The BP35 is shipped with Holder A, the blade retainer (safety clip), Holder B, shaft bolt, and bolt guard installed. The shaft bolt is a LEFT-HAND thread. Remove it by turning CLOCKWISE!
1. Remove the shaft bolt, bolt guard, Holder B, safety clip and the existing cutting attachment.
2. With the gearcase output shaft fac-ing up, rotate the output shaft and Holder A until the hole in Holder A aligns with the matching hole in the gearcase flange, and then lock the holder to the gearcase by insert-ing the long end of the hex wrench through both holes. See Figure 18A.
3. Using the combination spark plug wrench, remove the shaft bolt, bolt guard, Holder B and the safety clip. (The bolt guard, shaft bolt and safety clip are not used with a trimmer head). See Figure 18A.
Output Shaft
Hex Wrench
B
Holder B
Holder A
Hand-tighten Trimmer Head (counter-clockwise to install)
Figure 18
Mixing Fuel
1. Place the unit on a flat, level surface.
2. Clear any dirt or other debris from around the fuel filler cap.
3. Remove the fuel cap, and fill the tank with clean, fresh fuel.
4. Reinstall the fuel filler cap and tighten firmly.
Filling the Fuel Tank
IMPORTANT!Mix only enough fuel for your immedi-ate needs! If fuel must be stored longer than 30 days and Shindaiwa One oil with fuel stabilizer is not used, it should first be treated with a fuel stabilizer such as STA-BIL™.
WARNING!
Minimize the Risk of Fire!
STOP the engine before refueling.
ALWAYS allow the unit to cool before refueling!
Wipe all spilled fuel and move the unit at least 10 feet (3 me-ters) from the fueling point before restarting!
NEVER start or operate this unit if there is a fuel leak.
NEVER start or operate this unit if the carburetor, fuel lines, fuel tank and/or fuel tank cap are damaged.
NEVER smoke or light any fires near the unit or fuels!
NEVER place any flammable material near the engine muffler!
NEVER operate the engine with-out the muffler and spark arrester in place and properly functioning!
Use only fresh, clean unleaded gaso-line with a pump octane rating of 87 or higher.
Mix gasoline with 50:1 Shindaiwa Premium 2-cycle mixing oil or with an equivalent high quality 2-cycle mixing oil.
Example of 50:1 mixing quantities: 1 gallon of gasoline to 2.6 oz. mixing
oil.
5 liters of gasoline to 100 ml. mixing oil.
4. Install Holder B on the gearcase shaft. The splined hole on Holder A must engage with the gearcase shaft.
5. Using the hex wrench to secure Holder A , install and hand-tighten the trimmer head (counter-clockwise to install). See Figure 18B.
6. Remove the hex wrench from the gearcase and holder.
10
3526
7. Open the choke by moving the choke lever down. See Figure 24.
8. If the engine does not continue to run, repeat the starting procedure as previously described.
9. When the engine starts, clear excess fuel from the combustion area by rev-ving the engine several times with the throttle lever.
WARNING!
The cutting attachment will rotate as the engine accelerates!
10. Operating the throttle will automatic-ally disengage the fast-idle setting.
If the engine does not start–Repeat the appropriate starting procedures for a hot or cold engine. If the engine still fails to start, use the following procedure for “Starting a Flooded Engine”.
BP3523
BP3524
BP3521
BP3521
BP3520
BP3522
4. Replace the spark plug and tighten it firmly with the spark plug wrench. If a torque wrench is available, torque the spark plug to 148-165 inch-pounds (170-190 kg/cm).
CAUTION!Incorrect spark plug installation can result in serious engine damage!
5. Repeat the starting procedures for a warm engine.
6. If the engine still fails to start or fire, refer to the troubleshooting chart at the end of this manual.
CAUTION!The recoil starter can be easily dam-aged by abuse! Always engage the starter before
attempting to start the engine. Never pull the starter cord to its
full length. Always rewind the starter cord
slowly.
Starting the Engine
2. Set the throttle lever to “fast idle” by performing the following:
a. Squeeze and hold throttle lever (toward the handgrip).
b. Depress and hold throttle lever lock button.
c. While holding the throttle lever lock button, release throttle lever.
WARNING!
KEEP WELL CLEAR OF THE CUT-TING ATTACHMENT! THE CUT-TING ATTACHMENT MAY ROTATE WHEN THE ENGINE IS STARTED! Place the trimmer on the ground
during all starting operations. Make sure you have a secure
footing, and keep a firm grip on the unit as well.
Keep all bystanders and pets well clear of the brushcutter during starting.
BP35 Throttle Assembly
Throttle Lever Lock
Button
Choke Closed
Figure 20
Figure 21
OP
ER
AT
ION
3. Open the fuel cock by moving the lever to the down position See Figure 21.
Figure 22
4. (Cold Engine Only) Choke the engine by moving the choke lever up towards the spark plug (choke is closed). See Figure 22.
Fuel Cock Open
Choke Open
Make sure the cutting
attachment is clear of
obstructions!
5. While holding the unit firmly with your left hand, use your right hand to pull the starter handle slowly upward until you feel the starter engage. See Figure 23.
6. Start the trimmer by pulling the starter handle upward rapidly.
Figure 23
Figure 24
WARNING!
Never start engine from the operating position!
Starting a Flooded Engine1. Disconnect the spark plug lead,
and then use the spark plug wrench to remove the spark plug (turn counter-clockwise to remove). See Figure 25.
2. If the spark plug is fouled or is soaked with fuel, clean or replace the plug as necessary. For spark plug specifica-tions and gapping procedure, see page 14.
3. Pull the starter rope several times with the choke open and at wide open throttle to clear excess fuel from the combustion chamber.
Spark Plug
Turn counter-clockwise to
remove
Figure 25
Ignition ON
Figure 19
1. Move the ignition switch to the “ON” position.
When the engine starts or fires–
11
BP3527
BP3526
BP3525
Engine Idle AdjustmentThe engine must return to idle speed whenever the throttle lever is released. Idle speed is adjustable, and must be set low enough to permit the engine clutch to disengage the cutting attachment when the throttle is released.
WARNING!
The cutting attachment must NEVER rotate at engine idle! If the idle speed cannot be adjusted by the procedure described here, have the unit in-spected at an authorized Shindaiwa dealer.
Figure 27
Idle Adjusting Screw
1. Place the unit on the ground, then start the engine and allow it to idle 2-3 minutes until warm.
2. If the attachment rotates when the engine is at idle, reduce the idle speed by turning the idle adjustment screw counter-clockwise See Figure 27.
3. If a tachometer is available, the engine idle speed should be final adjusted to 2,750 (±250) RPM (min-1).
Stopping the Engine
Idle the engine briefly before stopping (about 2 minutes), then push the ignition switch to the off position to stop the engine. See Figure 26.
Figure 26
Ignition OFF
OP
ER
AT
ION
Left Hand OperationSome users of the BP35 may wish to operate the unit left handed. It is very important to follow these instructions if you wish to do so.
1. Loosen the exhaust outlet clamp and rotate the exhaust outlet approxi-mately 90 degrees counterclockwise as viewed from the top of the power head.
Figure 28LH Operation RH Operation
Exhaust Outlet
Clamp Screw
Shoulder Straps Adjust the Shoulder Straps:1. Place the Brushcutter on your back
with the straps loosened.
2. To tighten straps, push the outer strap through the buckle from the top until the loop formed is approximately the amount of adjustment necessary. See Figure 29A.
3. While holding the lower outer strap, grasp the buckle and pull upward until the strap is tight in the buckle. See Figure 29B.
4. To loosen, Reverse this procedure.
Figure 29
A B
2. Tighten the clamp screw firmly to prevent the outlet from moving out of position.
3. Put unit on, and in the operating posi-tion, check exhaust outlet to make sure exhaust flow is out and to the side of the operator. Readjust if neces-sary. See Figure 28.
12
BP3531A
OP
ER
AT
ION
The blade rotates counter-clockwise. For best performance and to minimize being struck by debris, move the blade from right to left while advancing on your work.Position the blade so cuts are made between the blade’s 8 o’clock and 10 o’clock positions (as viewed from above). DO NOT cut between the 10 o’clock and 5 o’clock positions (shaded area). See Figure 30.
WARNING!
When making vertical cuts, never allow the blade to exceed waist height.
WARNING!
DO NOT use 2-tooth or NON-Shindaiwa approved 4-tooth cutting blades with Shindaiwa brushcutters.
Vertical cutsHold the brushcutter with the blade at a 90° angle to the ground so the blade’s bottom edge rotates toward the opera-tor. Move the blade from top to bottom through the cut, and cut only with the bottom edge of the blade. See Figure 31.
WARNING!
When cutting wood with a blade, feed the blade slowly. Never strike or “slam” a spinning blade against the wood.
Cut on the left side of the blade. KEEP YOUR BODY OUTSIDE THE PATH
OF BLADE ROTATION
Figure 31
Figure 30
WARNING!
Before working with a blade-equipped unit, always inspect and clean the area of objects that could interfere with or damage the blade.
Never use a blade near side-walks, fence posts, buildings or other objects that could cause injury or damage.
Never use a blade for purposes other than those for which it was designed.
Whenever you strike a hard object with a blade, always stop the brushcutter and carefully inspect the blade for damage. NEVER OPERATE THE BRUSHCUTTER WITH A DAMAGED BLADE!
Always make sure the cutting attachment shield is properly installed before operating the unit.
Blade Thrust‘Blade thrust’ is a sudden sideways or backward motion of the brushcutter. Such motion may occur when the blade jams or catches on an object such as a sapling tree or tree stump. BE CONSTANTLY ALERT FOR BLADE THRUST AND GUARD AGAINST ITS EFFECTS!
Using a Brushcutter Blade
DO NOT CUT
TenO'clock
OK To Cut
EightO'clock
FiveO'clock
BladeRotation
Engine Operating SpeedsOperate the engine at full throttle while cutting. Best fuel efficiency is obtained by releasing the throttle when swinging back after a cut.
To prevent possible engine damage, do not allow the brushcutter to run at high speeds without a load.
Avoid operating the attachment at low speeds. Doing so can lead to rapid clutch wear. In addition, slow-speed operation tends to cause grass and debris to wrap around the cutting at-tachment.
13
Your Shindaiwa BP35 Brushcutter may be fitted with one of several Shindaiwa trimmer head models, each with features for specific applications and/or opera-tional requirements.For proper operation, always refer to the instructions accompanying the trimmer head being used. Available trimmer head styles include:
Semi-automatic. Trimmer line is indexed when the operator taps the trimmer head on the ground during operation.
Manual. The operator indexes line manually with the grass trimmer stopped.
Fixed. The operator must stop the unit and add new lengths of trimmer line manually.
Flail. This device, designed for clear-ing weeds and light brush, features three nylon blades attached to the head by pivots.
CAUTION! Do not push the rotating line into trees, wire fences or any material that could tangle or break line ends.
Cutting Grass
CAUTION! Operation at low RPM can lead to premature clutch failure.
Hold the unit so the trimmer head is angled slightly into the area to be cut. To ensure maximum trimmer-line service life, cut only with the tip of the trimmer line. To prevent grass clippings from being thrown back towards the operator or wrapping around the gearcase, swing the unit’s trimmer head from left to right while cutting. Keep the trimmer head horizontal. See Figure 32.
Engine Operating SpeedsOperate at full throttle while cutting grass.
Figure 32
OP
ER
AT
ION
Figure 33
EdgingTilt the handle about 100° to the left (from hori-zontal) and move forward, holding the unit so that the trimmer head cuts vertically. See Figure 33.
BP3529A
14
3535
3526
Daily Maintenance
WARNING!
Never repair a damaged blade by welding, straightening, or by modifying its shape. An altered blade may break during opera-tion, resulting in serious personal injury.
DO NOT use 2-tooth or NON-Shindaiwa approved 4-tooth cutting blades on Shindaiwa trimmers or brushcutters.
Blades are not interchangeable between Shindaiwa edgers and trimmer/brushcutter models. Operating any unit with a blade or attachment not approved for that unit can be hazardous and may cause serious injury.
WARNING!
Before performing any maintenance, repair or cleaning work on the unit, make sure the engine and cutting attachment are completely stopped. Disconnect the spark plug wire before performing service or mainte-nance work.
WARNING!
Non-standard parts may not oper-ate properly with your unit and may cause damage and lead to personal injury.
Air Cleaner Element
Prior to each work day, perform the following:
10-Hour Maintenance
Clean the spark plug and check the gap at the electrode.
Every 10 hours of operation (more frequently in dusty or dirty conditions): Remove the air cleaner element
from the carburetor and clean it thor-oughly with soap and water. Let dry before reinstalling the element. See Figure 34.
CAUTION! Do not operate the unit if the air cleaner or element is damaged, or if the element is wet.
10/15-Hour MaintenanceEvery 10 to 15 hours of operation: Remove and clean the spark plug. Adjust the spark plug electrode gap to
0.024-inch (0.6 mm). If the plug must be replaced, use only a Champion CJ8 or equivalent spark plug of the cor-rect heat range. See Figure 35.
CAUTION! Before removing the spark plug, clean the area around the plug to prevent dirt and debris from getting into the engine’s internal parts.
0.024-inch (0.6 mm)
Spark Plug
Turn counter-clockwise to
remove
Remove (3) Screws
Figure 35
Figure 34
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Inner Screen
Outer Screen
Clip
General Maintenance
BladesKeep blades sharp and check blade condition frequently. If a blade’s per-formance changes suddenly, stop the engine and check the blade for cracks or other damage. Replace a damaged blade IMMEDIATELY!
MufflerMake sure the muffler is well secured and in good condition. A worn or dam-aged muffler is a fire hazard and may also cause hearing loss.
Spark PlugKeep the spark plug and wire connec-tions tight and clean.
FastenersMake sure nuts, bolts, and screws (except carburetor adjusting screws) are tight.
NOTE:Using non-standard replacement parts could invalidate your Shindaiwa warranty.
Remove all dirt and debris from the engine, check the cooling fins and air cleaner for clogging, and clean as necessary.
Carefully remove any accumulations of dirt or debris from the muffler and fuel tank. Dirt build-up in these areas can lead to engine overheating, fire, or premature wear.
Check for loose or missing screws or components. Make sure the cutting attachment is securely fastened.
Check the entire unit for leaking fuel or grease.
15
3538
BP3537
Spark Arrester
1. Obtain a spark arrester and gasket from an authorized Shindaiwa dealer.
2. Remove the (3) socket-head cap screws retaining the muffler cowl and remove the cowl. See Figure 39.
3. Remove the spark arrester outlet cap by removing the (2) outlet cap screws.
4. Install the spark arrester gaskets, screen and cap. Tighten the (2) outlet cap screws securely. See Figure 39.
5. Reinstall the muffler cowl and tighten the (3) socket-head cap screws securely.
50-Hour MaintenanceEvery 50 hours of operation (more frequently in dusty or dirty conditions): Remove and clean the cylinder cover
and clean grass and dirt from the cylinder fins.
OldGrease
New Grease
Gear Shaft Collar
Fuel Filter
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Figure 37Figure 36
1. Disconnect the flex cable from the powerhead. Slide the flexible cable out of the flex cable housing.
2. Wash the cable thoroughly in a solvent bath, and then coat the entire cable with Shindaiwa Premium Gearcase Lubricant.
3. Install the cable into the flex cable housing, then reconnect the flex cable assembly to the powerhead.
NOTE:For maximum cable life, the flexible cable should be reversed “end-for-end” during reinstallation.
Cable (clean and
grease)
Shaft Tube
Figure 38
Remove the cutting attachment, holder and the gear shaft collar. Remove the filler plug from the side of the gearcase and press new grease into the gearcase until the old grease has been pushed out. Use only lith-ium-base grease such as Shindaiwa Gearcase Lubricant or equivalent. See Figure 36.
Pull apart the fuel filter hose at the joint and remove the fuel filter to clean or replace as necessary See Figure 37.
Lubricate the flex cable as follows:
Muffler
Spark Arrester ScreenMuffler Cowl (secured by 3 socket-head cap screws)
Socket-head Cap Screws
Figure 39
Gasket
Outlet Cap ScrewsOutlet Cap
IMPORTANT!BP35 brushcutter units do not have the spark arrester installed in the muf-fler. Before placing the brushcutter in service, check local, state and federal regulations to determine if a spark ar-rester is required in your area.
Installation
Muffler MaintenanceIf the engine becomes hard to start or has low power, the spark arrester screen should be inspected and cleaned.
WARNING!
Never operate the unit with a dam-aged or missing muffler! Operating with missing or damaged exhaust components is a fire hazard and could also damage your hearing.
1. Remove the (3) socket-head cap screws retaining the muffler cowl and remove the cowl. See Figure 39.
2. Remove the spark arrester screen by removing the (2) screws to the exhaust outlet cap.
3. Remove the spark arrester screen and clean with a stiff bristle brush.
IMPORTANT!If carbon deposits are severe or if no performance improvement is noted, this unit should be inspected by an autho-rized Shindaiwa servicing dealer.
4. Reinstall the spark arrester screen and cap. Tighten the (2) screws securely.
5. Reinstall the muffler cowl and tighten the (3) socket-head cap screws securely.
BP3535
16
Shindaiwa Tornado™ BladeTo sharpen the cutters on a Shindaiwa Tornado Blade, use a 7/32-inch round file. File the leading edge of each tooth to a razor edge. The top plate of each tooth should angle back 30°. See Figure 40.
When the cutting edges of the blade become dull, they can be resharpened with a few strokes of a file.In order to keep the blade in balance, all cutting edges must be sharpened equally.
CAUTION! Gasoline stored in the carburetor for extended periods can cause hard starting, and could also lead to increased service and mainte-nance costs.
Blade Sharpening
Whenever the unit will not be used for 30 days or longer, use the following pro-cedures to prepare it for storage:
Clean external parts thoroughly.
Drain all the fuel from the fuel tank.
Long Term Storage
WARNING!
Sharpen only the cutting teeth of a blade. DO NOT alter the contour of the blade in any way.
Multiple-tooth Circular BladeUse a round file to maintain a radius of 0.04 to 0.06” (1 to 1.5 mm) at the base of each tooth. Cutting edges must be offset equally on each side. See Figure 41.
Round File
30°
Round File
To remove the remaining fuel from the fuel lines and carburetor and with the fuel drained from the fuel tank;
Remove the spark plug and pour about 1/4 ounce of 2-cycle mixing oil into the cylinder through the spark plug hole. Slowly pull the recoil starter 2 or 3 times so oil will evenly coat the interior of the engine. Rein-stall the spark plug.
Before storing the unit, repair or replace any worn or damaged parts.
Remove the air cleaner element from the carburetor and clean it thoroughly with soap and water, let dry and reas-semble the element.
Store the unit in a clean, dust-free area.
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Figure 41
Figure 40
1. Pull apart the fuel filter hose at the joint and drain all fuel into an ap-proved fuel container. See page 15 (fuel filter replacement).
2. Start and run the engine until it stops running.
3. Repeat steps 1 and 2 until the engine will no longer start.
IMPORTANT!All stored fuels should be stabilized with a fuel stabilizer such as STA-BIL™.
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Troubleshooting Guide
Faulty recoil starter.
Fluid in the crankcase
Internal damage.
Loose spark plug.
Excess wear on cylinder, piston, rings.
Fuel incorrect, stale, or contaminated; mixture incorrect.
Check for clogged fuel filter and/or vent.
The ignition switch is in “O” (OFF) position.
Shorted ignition system.
Faulty ignition unit.
If the plug is wet, excess fuel may be in the cylinder.
The plug is fouled or improperly gapped.
The plug is damaged internally or of the wrong size.
Consult with an authorized servicing dealer.
Tighten and re-test.
Consult with an authorized servicing dealer.
Refill with clean, fresh unleaded gasoline with a pump octane of 87 or higher, mixed with Shindaiwa Premium 2-cycle mixing oil at a 50:1 gasoline/oil ratio.
Replace fuel filter or vent as required. Restart.
Move switch to “I” (ON) position and re-start.
Consult with an authorized servicing dealer.
Crank the engine with the plug removed, replace the plug, and restart.
Clean and gap the spark plug to 0.024 inch (0.6mm). Restart.
Replace the plug with a Champion CJ8 or equivalent type spark plug of the correct heat range. Restart.
NO
YES
What To Check Possible Cause RemedyENGINE DOES NOT START
NO
YESNO
YES
YESNO
YES
Is the engine overheating?
Engine is rough at all speeds. May also have black smoke and/or unburned fuel at the exhaust.
Operator is overworking the machine.
Carburetor mixture is too lean.
Improper fuel ratio.
Fan, fan cover, cylinder fins dirty or damaged.
Carbon deposits on the piston or in the muffler.
Clogged air cleaner.
Loose or damaged spark plug.
Air leakage or clogged fuel line.
Water in the fuel.
Piston seizure.
Faulty carburetor and/or diaphragm.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion chamber.
Shorten trimmer line. Cut at a slower rate.
Consult with an authorized servicing dealer.
Refill with clean, fresh unleaded gasoline with a pump octane of 87 or higher, mixed with Shindaiwa Premium 2-cycle mixing oil at a 50:1 gasoline/oil ratio.
Consult with an authorized servicing dealer.
Clean or replace the air filter.
Tighten or replace the plug with a Champion CJ8 or equivalent type spark plug of the correct heat range. Restart.
Repair or replace fuel filter and/or fuel line.
Refill with fresh fuel/oil mixture. See page 9.
Consult with an authorized servicing dealer.
See above.
Check fuel octane rating; check for presence of alcohol in the fuel. See page 9. Refuel as necessary.
Consult with an authorized servicing dealer.
What To Check Possible Cause RemedyLOW POWER OUTPUT
Engine is knocking.
Does the engine crank?
Good compression?
Does the tank contain fresh fuel of the proper grade?
Is fuel visible and moving in the return line when priming?
Is there spark at the spark plug wire terminal?
Check the spark plug.
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Troubleshooting Guide (continued)ADDITIONAL PROBLEMS
Poor acceleration.Clogged air filter.
Clogged fuel filter.
Lean fuel/air mixture.
Idle speed set too low.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose terminal.
Ignition failure.
Piston seizure.
Ground (stop) wire is disconnected, or switch is defective.
Overheating due to incorrect spark plug.
Overheated engine.
Engine idle too high.
Broken clutch spring or worn clutch spring boss.
Loose attachment holder.
Warped or damaged cutting attachment.
Loose gearcase.
Bent main shaft/worn or damaged bushings.
Shaft not installed in powerhead or gearcase.
Broken shaft.
Damaged gearcase.
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized servicing dealer.
Adjust: 2,750 (±250) RPM (min-1).
Reset the switch and restart.
Refuel. See page 9.
Replace filter.
Drain; replace with clean fuel. See page 9.
Clean or replace spark plug with a Champion CJ8 or equivalent type spark plug of the correct heat range. Restart. Tighten the terminal.
Replace the ignition unit.
Consult with an authorized servicing dealer.
Test and replace as required.
Replace spark plug with a Champion CJ8 or equivalent type spark plug of the correct heat range.
Idle engine until cool.
Set idle: 2,750 (±250) RPM (min-1).
Replace spring/shoes as required, check idle speed.
Inspect and re-tighten holders securely.
Inspect and replace attachment as required.
Tighten gearcase securely.
Inspect and replace as necessary.
Inspect and reinstall as required.
Consult with an authorized servicing dealer.
Symptom Possible Cause Remedy
Engine stops abruptly.
Engine difficult to shut off.
Excessive vibration.
Cutting attachment rotates at engine idle.
Cutting attachment will not rotate.
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NOTES:
Shindaiwa Inc.11975 S.W. Herman Rd.Tualatin, Oregon 97062 USATelephone: 503 692-3070FAX: 503 692-6696www.shindaiwa.com
Shindaiwa Kogyo Co., Ltd.Head Office:6-2-11, Ozuka-NishiAsaminami-Ku, Hiroshima731-3167, JapanTelephone: 81-82-849-2220FAX: 81-82-849-2481
©2005 Shindaiwa, Inc. Part Number 72051-93115Revision 5/05
Shindaiwa is a registered trademarkof Shindaiwa, Inc.Specifications subject to change without notice.